Pulverizer.



F. OGDEN.

PULVERIZER.

APPLICATION FILED JULY 5. I9I0.

Patented May 2, 1916.

3 SHEETS-SHEET i.

' F. OGDEN.

PULVERIZER.

APPLICATION FILED JULY 5. 1910.

Patented May 2, 1916.

3 SHEETS-SHEET 2.

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F. OGDEN.

PULVERIZER.

APPLICATION FILED IULYS, I910. I Patented May 2, 1916.

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PULVEBIZEB.

Application filed July 5, 1910. Serial No. 570,261.

To all whom it may concern:

Be it known that 1, Farms OGDEN, a citizen of the United States, and resident of St. Louis, Missouri, have invented certain new and useful Improvements in Pulverizers, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof. My invention relates to improvements in pulverizers and particularly relates to that class of pulverizers in which there is a fixed circular, or partially circular, grinding surface and hinged hammers coacting with the grinding surface for the reduction of different materials.

The primary object of my invention is to construct a hinged support for the hammers of a pulverizer, which support is constructed in such manner as to greatly facilitate the adjustment of the hammers relative the gmding surface, and which adjustment is er than is possible with other machines in this art.

A further object of my invention is to construct a concave or grinding surface in which there is a number of. indivldual roughened grinding surfaces of unusual width adjacent thefeed opening, which surfaces greatly increase the capacity of the hine.

For the above purposes my invention con-' sists in certain novel features of construction and arrangement of parts as will be hereinafter more fully described, pointed out in the claims and illustrated by the accompanying drawings, in which a Figure 1 is a vertical, sectional elevation illustrating my complete machine; Fig. 2

. is an elevation, partly in section, and illustrates the hammers and the arrangement of my improved supports for the hammers; Fig. 3 is an elevatlon of one of the disks for supporting the hammers: Fig. 4 is an elevation of a second form of hammer support- 'ing-disk; Fig. -5. is an elevation, partly in section, of one of the clamping members for holding the disks in place; Fig. 6 is a perspective of one of the bearing blocks for the hammer supporting-rods; Fig. 7 is an elevation-illustrating a set of hammers positions adjacent their innermost limits of movements; and Fig.8 is a view similar to Fig. 7-il1ustrating the hammers adjacent their outermost limits of movements.

Specification of Letters Patent.

Patented May 2, 1916.

Referring by numerals to the accompanying drawings: 1 designates the base of the machine, 2 a hinged cover or casing partially inclosing the base and 3 a hopper or feed opening. Arranged within the base and cover is a grinding surface comprising the bars 4, adjacent the feed opening, and the screen or cage bars 5, the bars 5 being of ordmary construction and the bars 4 being bars of unusual width. k

Y Journaled in any suitable manner upon the base is a main shaft 6 and keyed or otherwise secured to the shaft 6 is a plurality of disks 7 having projecting hub sections 8, theinnermost disks 7 having hubs projecting'from each side face and the end disks 7 having hub sections projecting from I their inner faces only.

9 designates disks of a second set having enlarged hub sections 10 which embrace the hub sections of the disks 7 and. which hub sections 10 are of a width sufficient to hold the hub sections 8 out of contact with each other. The said hub sections 8 constitute a sleeve, which 'is mounted directly upon said shaft 6. v

The disks 7 and 9 are provided with a plurality of curved slots Hand 12 respectively equally spaced apart, and each slot being arranged at an angle to any radial line that may be drawn from the axis of the disk. The outlines of these slots maybe sections of spirals or other curves or may even be straight for a limited range of adjustment of the hammers, but for facility of manufacture, combined with a wide range. of adjustment, I believe the best form of construction is to make their outlines arcs of circles. The slots 11 in the disks 7 I will say incline from left to right while the slots 12 in the disks 9 incline from right to left. Mounted in each slot of each disk is a bearing block 13 and extended through the blocks are the rods 14 for the support of'the hammers 15,

the main shaft is greatly resisted for the reason that the hubs of thedisks 7 do not contact.

For the purpose of adjusting any set or all of the sets of hammers the peripheries of the disks are provided with notches 19, for receiving a common spanner or other tool;

This class of pulverizer is employed in crushing, grinding, pulverizing, shredding or disintegrating nearly all kinds of granular, fibrous or even plastic material, such as coal, stone, ores, cement and clinkers, hay for stock feed or clay for tile or brick makmg.

The said disks 7 and 9 constitute two elements in which a hammer support is adjustably mounted, it being apparent that. said elements are rotatable Ielati\e to each other to adjust said hammer support.

,lVhen employed for the reduction of coal,

stones, ores and the like, there is a mateterial wear upon the outer faces of the hammers and the lengths of the hammers are varied by such wear, which wear must be compensated for so that the distance or spaces between the hammer ends and the concave or grinding surface will be uniform. By reason of the hammers being supported on rods arranged in oppositely inclined slots, as I have done, the adjustment may be as fine as desired and accomplished in a minimum of time without disarranging the machine, by simply placing a spanner or the like to contact with the notches in the peripheries of the disks and turning the disks in opposite directions until the hammer ends are brought tothe desired adjustment. If it be desired to shorten the lengths of the hammers then, of course, the bearing blocks are brought closer to the centers of the disks,

and if it be desired to lengthen the hammers then the blocks are spaced nearer the outer ends of the slots or away from the centers of the disks as is clearly illustrated in Figs. 7 and 8, Fig. 7 illustrating the relative arrangement of a pair of disks when the hammers are full length and Fig. 8 the relative arrangement of a pair of disks when the hammers are shortened by wear and extended so that their faces are held at the same point as when in Fig. 7. These interlocking disks, in addition to their functions as a hammer adjusting device, have also a second function, which, in combination with the keepers or nuts, is to stiffen the shaft. Great rigidity is required in shafts .of this class of mill, owing to the great centrifugal forces involved. \Vhen the nuts or keepers are screwed with great force against the disks, a portion of the resilience of the shaft is destroyed, and the rigidity becomes even greater than would be that of a shaft whose diameter equaled that of the hub of the movable disk. Therefore a smaller shaft may be used with a saving of material and thus obtain the required stiffness without the necessity of turning down the journals.

I claim:

1. In a pulverizer, a hammer support comprising a pair of rotatable disks, there being a slot in each disk, the slot in one disk being inclinedrelative a radial line drawn from the center of the disk, the slot in the other disk being disposed at an angle relative the slot in'the first mentioned disk, a

hammer pivotally supported in said slots,

and means for rotating said disks.

2. A crusher, comprising a casing, a rotary shaft, a hammer support on said shaft comprising two disks having oppositely arranged slots, each slot arranged at an angle relative a radial line from the center of the disk, rods supported in said slots and hammers pivotally mounted on said rods.

3. A crusher, comprising a casing, a shaft mounted for rotation in the casing, hammer the axis of the disk and the slot in the other disk being at an angle relative its coacting slot.

4. A crusher, comprising a casing, a rotary shaft, a hammer support consisting of a pair of perforated disks, the perforations in the disks arranged oppositely and in series increasing in radial distance, and hammers adjustablyplvoted in said perforations.

5. A hammer support, comprising a pair of disks having slots arranged in opposite directions, rods supported in said slots, hammers pivotally carried by said rods and means for holding said disks against movement relative each other.

6. In a crusher, the combination with a shaft mounted for rotation, of hammer supports, comprising pairs of disks, a number of which have hubs which bear against said shaft, and the remainder of which have hubs which bear against the hubs of the first mentioned disks, and means for securely holding said hubs and disks together and to rotate with said shaft, whereby additional stiffness and rigidity is given to the shaft.

7. In a pulverizer of the class described. two sets of slotted disks, one set being alternately arranged with the other set, the slots in one set of disks being tangentially arranged and oppositely disposed relative to the slots in the opposite set of disks, rods passing through the slots, hammers mounted upon said rods, and means whereby one of the sets of disks is rotatably adjusted relative to the opposite set of disks.

8. In a pulverizer of the class described, a driven shaft, two sets of slotted disks alternately arranged on said shaft, one set being fixed on to said shaft and one set being loose thereon, the slots in one set of disks being tangentially arranged and oppositely disposed relative to the slots in the opposite set of disks, rods passing through said slots and hammers carried by said rods. 9. In a pulverizer of the class described, a driven shaft, two sets of slotted disks alternately arranged on said shaft, one set being fixed on to said shaft, and one set being loose thereon, the slots in one set of disks being tangentially arranged and oppo: sitely disposed relative to the slots in the oppositev set of disks, rods passing through said slots, hammers carried by said rods, and means for shifting the loosely mounted set of disks upon the shaft.

10. In a pulverizer of the class described, a driven shaft, two sets of slotted disks alternately arranged on said shaft, one set being fixed on to said shaft and one set being loose thereon, the slots in one set of disks being tangentially arranged and oppositely disposed relative to the slots in the opposite set of disks, rods passing through said slots, hammers carried by said rods, means for shifting the loosely mounted set of disks upon the shaft, and means whereby the shifting means is locked after movement. 11. In a pulverizer of the class described, a. pair of slotted disks, one of which is adapted to be rotated independent of the other, the slots in said disks being formed in corresponding pairs, one slot of each pair being arranged at an angle relative to the corresponding slot, members loosely mounted in the corresponding pairs of slots, and hammers carried by said members.

12. In a pulverizer of the pivoted hammer type, the combination of a hammer support, hammers pivotally mounted on said support, and two elements in which said hammer support is adjustably mounted, said elements being rotatable relative to each other to adjust said hammer support, and

means for locking said rotatable elements in position.

13. In a pulverizer of the class described, two opposite sets of disks, having perforated curved or arc-shaped slots, the slots in each set of disks being eccentrically and alter nately arranged and oppositely disposed relative to the slots in the opposite set of disks, rods passing through the slots, hammers mounted upon said rods, and means whereby one of the sets of disks is rotatively adjusted relative to the opposite set of disks.

14. In a pulverizer of the class described, two sets of slotted disks, the slots in the two sets of disks being eccentrically and alternately .arranged and oppositely disposed relative .to each other, perforated sliding bearings fitted to slide in the slots, rods passing through said bearings, and hammers mounted on said rods.

15. In a pulverizer of the class described, a suitable shaft, two kinds of disks, one kind being stationary and fixed on said shaft, and the other kind loose and movable, there being notches in the peripheries of said disks for adjusting said loose and movable disks or elements rotatably by the external application of power to their peripheries or extremities.

16. In a rotary hammer mill: a shaft, disks arranged on the shaft, hammers outwardly adjustably mounted in the disks, means carried by said disks for effecting outward adjustment of said hammers, and suitable locking means arranged directly on said shaft and cooperating with said adjusting means, whereby the latter may be held in di fierent adjusted positions.

17. In a pulverizer of the class described, a driven shaft, suitable hammer-supporting members mounted thereon, hammer-pivots, hammers on said pivots, said members being provided with eccentric shaped slots or surfaces arranged to resist the centrifugal force of the said hammers and pivots, and means, whereby said members and pivots may be rotatably adjusted relative to each other.

In. testimony whereof, I have signed my name to this specification, in presence of two subscribing witnesses.

. FERRIS OGDEN.

Witnesses:

E. E. LoNGAN, E. L. WALLACE. 

